Energy Storage Solution
Battery energy storage for resilience, peak shaving and renewable integration.
The Problem
Customer Challenge
Facilities facing unreliable grid power, high demand charges, or sustainability targets need energy storage that goes beyond traditional UPS batteries to provide longer-duration resilience and cost management. UPS batteries are sized for short-duration ride-through; a BESS is sized for longer backup, peak shaving or renewable integration, which is a different engineering problem, not just a bigger battery.
The Approach
Solution Architecture
Wandtung integrates battery racks, PCS and EMS into cabinet or containerized battery energy storage systems, configurable for backup power, peak shaving, or renewable (solar) integration. A cabinet-format system starts around 261kWh per unit and paralleles to 250kW–1000kW for C&I sites that want to stage capacity growth; a containerized system packages up to 3840kWh in a single outdoor-rated (IP55) unit for sites that need a large amount of capacity in one self-contained deployment.
System
System Components
Battery Racks
LFP battery modules — 51.2V, 280Ah/314Ah per module in Wandtung's cabinet-format ESS, scaling to 3840kWh per container in the containerized format.
PCS
Power conversion system — 125kW per cabinet in Wandtung's liquid-cooled all-in-one design, paralleling to 250kW–1000kW at system level.
EMS
Energy management system controlling operating strategy and monitoring.
Architecture
How It Works
- 1
Battery racks store energy from the grid or renewable sources.
- 2
The PCS converts stored DC energy to AC for site use, and manages charging.
- 3
The EMS applies the operating strategy — backup, peak shaving, or renewable integration — and reports system status.
Configuration
Product Configuration
Battery Energy Storage System (BESS)
Containerized and cabinet-based battery energy storage for resilient site power.
Energy Storage Cabinet
Outdoor IP55 liquid-cooled all-in-one BESS cabinet, 51.2V LFP, scalable to utility scale.
Containerized Energy Storage System
Outdoor-rated liquid-cooled LFP containerized energy storage, up to 3840 kWh per unit.
Solar Power System
Grid-tied or off-grid solar generation paired with site energy storage.
Advantages
Technical Advantages
- Configurable operating strategy via EMS
- Cabinet (261kWh, outdoor IP55, liquid-cooled) or containerized (up to 3840kWh) deployment options
- Renewable integration ready
Process
Deployment Process
Step 1
Energy & Use-Case Assessment
Define required capacity and operating strategy.
Step 2
System Sizing
Size battery, PCS and EMS to the use case.
Step 3
Installation
Deploy cabinet or containerized ESS at site.
Step 4
Commissioning
Verify operating strategy and integration with site power.
Deployment
Typical Applications
FAQ
Frequently Asked Questions
Can a battery energy storage system replace a UPS?
A BESS can supplement or, in some architectures, replace part of a traditional UPS battery system, but the two serve different primary purposes — UPS batteries are optimized for short-duration ride-through, while BESS is typically sized for longer-duration backup, peak shaving or renewable integration.
Should I choose a cabinet-format or containerized battery system?
A cabinet-format system is a compact, outdoor-rated all-in-one unit well suited to C&I sites and staged capacity growth — multiple cabinets can be paralleled with a shared PCS, from 250kW up to 1000kW. A containerized system is preferred when a single self-contained unit needs to deliver very large capacity — up to 3840kWh — at one location.
Why does Wandtung use liquid cooling in its battery systems?
Liquid cooling holds cell-to-cell temperature variation to within ΔT ≤ 3°C, far tighter than air cooling achieves. Even cell temperatures extend battery cycle life, improve safety, and keep the system's usable capacity consistent over time.
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